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import type { Message } from 'ai';
import type { ChatHistory } from './useChatHistory';
import { createScopedLogger } from '~/utils/logger';
const logger = createScopedLogger('ChatHistory');
// this is used at the top level and never rejects
export async function openDatabase(): Promise<IDBDatabase | undefined> {
return new Promise((resolve) => {
const request = indexedDB.open('boltHistory', 1);
request.onupgradeneeded = (event: IDBVersionChangeEvent) => {
const db = (event.target as IDBOpenDBRequest).result;
if (!db.objectStoreNames.contains('chats')) {
const store = db.createObjectStore('chats', { keyPath: 'id' });
store.createIndex('id', 'id', { unique: true });
store.createIndex('urlId', 'urlId', { unique: true });
}
};
request.onsuccess = (event: Event) => {
resolve((event.target as IDBOpenDBRequest).result);
};
request.onerror = (event: Event) => {
resolve(undefined);
logger.error((event.target as IDBOpenDBRequest).error);
};
});
}
export async function setMessages(
db: IDBDatabase,
id: string,
messages: Message[],
urlId?: string,
description?: string,
): Promise<void> {
return new Promise((resolve, reject) => {
const transaction = db.transaction('chats', 'readwrite');
const store = transaction.objectStore('chats');
const request = store.put({
id,
messages,
urlId,
description,
});
request.onsuccess = () => resolve();
request.onerror = () => reject(request.error);
});
}
export async function getMessages(db: IDBDatabase, id: string): Promise<ChatHistory> {
return (await getMessagesById(db, id)) || (await getMessagesByUrlId(db, id));
}
export async function getMessagesByUrlId(db: IDBDatabase, id: string): Promise<ChatHistory> {
return new Promise((resolve, reject) => {
const transaction = db.transaction('chats', 'readonly');
const store = transaction.objectStore('chats');
const index = store.index('urlId');
const request = index.get(id);
request.onsuccess = () => resolve(request.result as ChatHistory);
request.onerror = () => reject(request.error);
});
}
export async function getMessagesById(db: IDBDatabase, id: string): Promise<ChatHistory> {
return new Promise((resolve, reject) => {
const transaction = db.transaction('chats', 'readonly');
const store = transaction.objectStore('chats');
const request = store.get(id);
request.onsuccess = () => resolve(request.result as ChatHistory);
request.onerror = () => reject(request.error);
});
}
export async function getNextId(db: IDBDatabase): Promise<string> {
return new Promise((resolve, reject) => {
const transaction = db.transaction('chats', 'readonly');
const store = transaction.objectStore('chats');
const request = store.count();
request.onsuccess = () => resolve(String(request.result));
request.onerror = () => reject(request.error);
});
}
export async function getUrlId(db: IDBDatabase, id: string): Promise<string> {
const idList = await getUrlIds(db);
if (!idList.includes(id)) {
return id;
} else {
let i = 2;
while (idList.includes(`${id}-${i}`)) {
i++;
}
return `${id}-${i}`;
}
}
async function getUrlIds(db: IDBDatabase): Promise<string[]> {
return new Promise((resolve, reject) => {
const transaction = db.transaction('chats', 'readonly');
const store = transaction.objectStore('chats');
const idList: string[] = [];
const request = store.openCursor();
request.onsuccess = (event: Event) => {
const cursor = (event.target as IDBRequest<IDBCursorWithValue>).result;
if (cursor) {
idList.push(cursor.value.urlId);
cursor.continue();
} else {
resolve(idList);
}
};
request.onerror = () => {
reject(request.error);
};
});
}
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